[DEBUG] Fix crash when stop after a fail during the start.
[DEBUG] Fix crash when stop after a fail during the start.

Change-Id: Ic2fb21ae95d8925ef34bfe15b6fb2c0d8f056842

pwkalana9/libARController,niavok/libARController,offbye/libARController,offbye/libARController,pwkalana9/libARController,offbye/libARController,Parrot-Developers/libARController,pwkalana9/libARController,niavok/libARController,offbye/libARController,pwkalana9/libARController,niavok/libARController,niavok/libARController,Parrot-Developers/libARController,Parrot-Developers/libARController,Parrot-Developers/libARController